CN207600274U - Heat exchanger tube, heat exchanger and air conditioner - Google Patents

Abstract

The utility model is related to a kind of heat exchanger tube, heat exchanger and air conditioners, wherein, heat exchanger tube includes tube body (1), circumferentially arranged with fin (2) on the outer wall of tube body (1), the partially circumferentially region of fin (2) is equipped with protrusion, and the rest part circumferential zones of fin (2) form smooth fin section (6).Such heat exchanger tube is adhered to the thickness of liquid film on fin surface by setting protrusion that can be thinned on fin, increases heat exchange surface area, this kind of structure can enhance the phase-change heat-exchange ability of its part；Meanwhile smooth fin section can reduce liquid flowing resistance, and liquid is made swimmingly to flow out, and gather the circumferential heat exchange area of reduction in fin surface to prevent liquid film and increase thermal resistance, so as to the comprehensive overall heat exchange effect for improving heat exchanger tube.

Description

Heat exchanger tube, heat exchanger and air conditioner

Technical field

The utility model is related to a kind of air conditioner technical field more particularly to heat exchanger tube, heat exchanger and air conditioners.

Background technology

In Refrigeration ＆ Air-Conditioning industry, for water cooled condenser because compact-sized, applicability is wide, is developed rapidly.Water Cold type heat exchanger majority is shell and tube exchanger, and within the condenser, it is exactly housing that exchanging heat on it, which influences a bigger factor, The quality of middle performance of heat exchange tubes.Condenser pipe is in heat transfer process, and the gaseous coolant on the outside of condenser pipe is by undergoing phase transition and inside Water exchange heat, since the thermal resistance of condenser pipe is primarily present in outside pipe, principle is strengthened according to weak side, it is aobvious to carrying out outside pipe strengthening Must be particularly important, pipe external thermal resistance should be reduced to the maximum extent to improve heat exchange property.

To realize this purpose, condenser pipe generally processes metal into fin so as to increase its heat exchange in the peripheral helical of tube body Area, and secondary rolled is carried out in the entire circumferential direction in the top of helical fin, boss or wedge angle are formed, first, further increasing pipe Outer surface area second is that due to the boss or wedge angle of formation, can be thinned the thickness for condensing in liquid film on fin surface, reduce heat Resistance improves the heat exchange property of condenser pipe.But find in actual use, such condenser pipe fail to make condenser reach compared with High heat exchange efficiency, it is therefore desirable to be further improved.

Utility model content

The purpose of this utility model is to propose a kind of heat exchanger tube, heat exchanger and air conditioner, can improve the heat exchange of heat exchanger tube Ability.

To achieve the above object, the utility model first aspect provides a kind of heat exchanger tube, including tube body, the outer wall of tube body On circumferentially arranged with fin, protrusion is equipped on the partially circumferentially region of fin, the rest part circumferential zones of fin are formed Smooth fin section.

Further, helically line is distributed fin on the outer wall of tube body.

Further, region of the fin equipped with protrusion forms the first continuum in the circumferential, and smooth fin section exists It is upwardly formed the second continuum week.

Further, smooth fin section corresponding angular range in tube body circumferential direction is less than or equal to 180 °.

Further, include multigroup protrusion in the region equipped with protrusion on fin, multigroup protrusion is in fin Circumferentially-spaced setting.

Further, the first continuum and the second continuum are included in the circumferential direction of fin, wherein, the first continuum It is interior be equipped with multigroup protrusion, multigroup protrusion fin circumferentially-spaced setting, the second continuum be smooth fin section.

Further, the local location of smooth fin section is equipped with protrusion.

Further, the first continuum and the second continuum are included in the circumferential direction of fin, wherein, the first continuum For along the continuum for being circumferentially with protrusion of fin, the second continuum is smooth fin section, the part of smooth fin section Position is equipped with protrusion.

Further, in a state that heat exchanger tube is installed within the condenser, the first continuum is set upward, the second continuum Domain is set downward.

Further, the free end of protrusion has sharp portion.

Further, at least two layers of protrusion is equipped on the radial height direction of fin.

Further, at least two layers of protrusion stagger setting in the circumferential direction along tube body.

Further, at least two layers of protrusion includes first layer protrusion and second layer protrusion, and fin top passes through rolling Flower-shape is into indent, while the both ends of indent form first layer protrusion to extension on the outside of fin, and second layer protruding parts is in first The radially inner side of layer protrusion, second layer protrusion are formed by annular knurl.

Further, each second layer protrusion is respectively positioned on the same side of fin.

Further, indent is obliquely installed relative to the axis of tube body.

Further, the first layer protrusion in adjacent fins mutually staggers setting in the circumferential direction of tube body.

Further, the end in indent along length direction is in class triangle, trapezoidal or rectangle；And/or the second layer is convex Go out the compressive plane in portion in class triangle, trapezoidal or rectangle.

Further, the inner wall of tube body is equipped with spiral helicine raised thread.

Further, raised thread is multiple thread.

Further, the cross section of raised thread is in class is trapezoidal or triangular structure.

Further, fin is integrally disposed upon on tube body and/or protrusion is integrally disposed upon on fin.

Further, at least one of fin and protrusion are molding by extrusion.

Further, smooth fin section corresponding angle proportion ranging from 1/ throughout the circumferential in tube body circumferential direction 7~1/2.

Further, groove body 3 is formed between adjacent fins, groove body bottom is smooth, and groove body bottom and the junction of fin In rounding off；Or groove body bottom is in integrally rounding off.

Further, fin and angle α=0.3 °~3.0 ° between the plane of tube body axis.

Further, thickness h 7=0.1~0.252mm of fin forms the width h8=of groove body between adjacent fins 0.252~0.558mm.

Further, the width h2=0.01 of depth h1=0.1~0.45mm or indent of the indent apart from fin top~ Length h3=0.05~0.2mm that 0.35mm or first layer protrusion are protruded to the extension of fin side.

Further, angle β=15 °~65 ° between indent inclined direction and fin top extending direction.

Further, second layer protrusion is relative to the outwardly extending width h4=0.05~0.2mm of fin surface or Step height h5=0.15~the 0.45mm or second layer protrusion that two layers of protrusion bottom are formed with tube body root are in fin week Upward width h6=0.05~0.32mm.

Further, quantity n2=35~100 of indent are set on individual pen fin 2；Or in 2 side of individual pen fin Form quantity n3=35~100 of second layer protrusion.

Further, raised thread relative to inclination angle alpha 1=15~55 ° of tube body axis or raised thread in pipe The angle γ that the section Shang Liangge sides of protrusion height h9=0.15~0.55mm or raised thread on internal wall are formed= 15~65 °；Or raised thread is multiple thread, multiple thread is distributed n1=10~80 in the whole circumference of inboard wall of tube body It is a.

To achieve the above object, the utility model second aspect provides a kind of heat exchanger, changing including above-described embodiment Heat pipe.

Further, heat exchanger is condenser.

Further, fin is equipped with the region of protrusion in the circumferential for continuum, heat exchanger tube after mounting, fin Region with protrusion is set upward, and smooth fin section is set downward.

To achieve the above object, the utility model third aspect provides a kind of air conditioner, changing including above-described embodiment Hot device.

Based on above-mentioned technical proposal, the heat exchanger tube of the utility model embodiment is exchanging heat pipe outer wall fin partially circumferentially Protrusion is set on region, and the rest part circumferential zones of fin form smooth fin section, the liquid generated after heat exchange can lead to Cross the groove body export between adjacent smooth fin section.Such heat exchanger tube is adhered to by setting protrusion that can be thinned on fin The thickness of liquid film on fin surface, increases heat exchange surface area, this kind of structure can enhance the phase-change heat-exchange ability of its part；Meanwhile Smooth fin section can reduce liquid flowing resistance, and liquid is made swimmingly to flow out, and gathered to prevent liquid film in fin surface and reduce week Increase thermal resistance to heat exchange area, so as to the comprehensive overall heat exchange effect for improving heat exchanger tube.

Description of the drawings

Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application, The illustrative embodiments and their description of the utility model are not formed for explaining the utility model to the improper of the utility model It limits.In the accompanying drawings：

Fig. 1 is the structure diagram of one embodiment of the utility model heat exchanger tube；

Fig. 2 is the fin structure schematic diagram after one embodiment of the utility model heat exchanger tube is circumferentially unfolded；

Fig. 3 is the side view of fin after one embodiment of the utility model heat exchanger tube is circumferentially unfolded；

Fig. 4 is the partial sectional view of the utility model heat exchanger tube one embodiment；

Fig. 5 is the vertical view after one embodiment of the utility model heat exchanger tube is circumferentially unfolded；

Fig. 6 is the full sectional view of one embodiment of the utility model heat exchanger tube.

Reference sign

1st, tube body；2nd, fin；3rd, groove body；4th, first layer protrusion；5th, second layer protrusion；6th, smooth fin section；7th, it presses Slot；8th, raised thread；11st, into wing section；12nd, smooth section；13rd, changeover portion.

Specific embodiment

The utility model described further below.In the following paragraphs, the different aspect of embodiment is defined in more detail. The various aspects so limited can be combined with any other one side or many aspects, can not be combined unless explicitly stated otherwise.Especially It is, it is considered to be preferred or advantageous any feature can be considered as preferred or advantageous spy with other one or more Sign.

The terms descriptions merely for convenience such as " first " that occurs in the utility model, " second ", with distinguish have it is identical The different building blocks of title are not offered as priority or primary-slave relation.

In the description of the present invention, it is to be appreciated that term " on ", " under ", "left", "right", "front", "rear", The orientation or position relationship of instructions such as " circumferential directions ", " axial direction " and " radial direction " are based on orientation shown in the drawings or position relationship, only It is the utility model rather than instruction for ease of description or implies that signified device there must be specific orientation, with specific Azimuth configuration and operation, therefore it is not intended that limitation to scope of protection of the utility model.

Even if utility model people find to add on heat exchanger tube external helicoid fin in use more boss or Wedge angle, is also difficult to obtain in condensation process ideal heat exchange property, thus utility model people to the heat transfer process of condenser pipe into Research is gone.It is found in the Experimental Study of Heat Transfer of condenser pipe, during condensing heat-exchange is realized, gaseous coolant major part exists condenser pipe The outer surface of upper of condenser pipe circumferencial direction is condensed, and the liquid refrigerants for condensing formation later is flowed along the channel between fin To condenser pipe in the following, and draining from condensation bottom of the tube.

Condenser pipe of the prior art in the reinforcing condensation process of phase-change heat-exchange, is generally squeezed outside pipe by ELEMENTARY INTRODUCTION TO NON Forming technique increases the density of fin or the quantity of sharp portion to enhance condensation effect, and is handled in fin top, is formed Sharp protrusion.Because according to common thinking, this mode can increase heat exchange surface area, and can make thinner to large extent The refrigerant liquid film on fin is condensed in, thermal resistance is reduced, so as to improve the heat exchange property of condenser pipe.But utility model people pays attention to It arrives, the increased boss of fin surface and wedge angle also increase liquid film drippage and the resistance of discharge simultaneously, it is impossible to swimmingly from heat exchange Bottom of the tube flows away, and liquid film is caused to accumulate in fin surface, makes thickening but also increasing thermal resistance so as to influence heat exchange property for liquid film not only.

Utility model people conducts in-depth research condenser pipe strengthening mechanism as a result,：On the one hand, thinned refrigerant is needed to coagulate The liquid film being adhered directly to during knot on condensation tube outer surface fin, to reduce thermal resistance so as to improve heat exchange property；On the other hand, it needs The liquid refrigerants for condensing pipe surface condensation to be drained in time, preventing liquid refrigerants from accumulating in heat exchange surface makes liquid film thicken and increase Heating resistance.But there are restricting relations for these two aspects, it is difficult to take into account simultaneously.In this way, individually increase the quantity of surface sharp portion Mistaken ideas have just been absorbed in terms of heat exchange property is improved, moreover, when being increased by the sharp portion quantity that surface knurling is formed, in circumference In the case that size is certain, mold tooth punching knurled portion is thinned, and the intensity of gear hobbing can reduce in mold, is susceptible to mold and collapses tooth The phenomenon that, so as to increase the difficulty of processing of mold and cost.

According to this thinking, the purpose of this utility model is to take into account reducer membrane for strengthening heat exchange simultaneously and refrigerant liquid is timely The problem of draining, to improve the overall heat exchange effect of condenser pipe.Such condenser pipe is in addition to can be used within the condenser, it is also possible to steam It sends out in device, therefore is subsequently referred to as heat exchanger tube.

In a schematical embodiment, as shown in Figure 1, the heat exchanger tube of the utility model includes tube body 1, tube body 1 Circumferentially arranged with fin 2 on outer wall, groove body 3 is formed along between the adjacent turn fin 2 of 1 axial direction of tube body.For example, tube body 1 is pipe, Helically line is distributed fin 2 on the outer wall of tube body 1 or the fin 2 of multiple annular shapes is spaced on the outer wall of tube body 1 and sets It puts.Alternatively, the shape of the needs such as ellipse, rectangle or polygon also may be selected in the section of tube body 1.Fin 2 is only in part Circumferential zones are equipped with protrusion, are smooth fin section 6 on rest part circumferential zones, i.e., are not set on 2 surface of fin convex Go out portion, the liquid generated after condensing heat-exchange is flowed out by the groove body 3 between adjacent smooth fin section 6.Wherein, protrusion can be Boss or wedge angle for being located on 2 surface of fin etc., shape is unrestricted.Preferably, protrusion is located at the side of fin 2.

Such heat exchanger tube is preferably used in horizontal condenser, and heat exchanger tube is horizontally mounted, and is passed through inside heat exchanger tube to be heated Fluid, outside is full of gaseous coolant, for example, by using water or freon as refrigerant.Preferably, heat exchanger tube when mounted, fin 2 The region for being equipped with protrusion is located above, and smooth fin section 6 is located at lower section.

In heat transfer process, the most of outer surface of upper in heat exchanger tube circumferencial direction of gaseous coolant is condensed, and is exchanged heat The fin 2 of pipe upper area is equipped with protrusion, and since protrusion is higher than 2 surface of fin, protrusion is relative to fin surface Corner curvature increases, and the thickness for being adhered to liquid film on 2 surface of fin can be thinned, while also increase heat exchange surface area, therefore The upper area that heat pipe outer surface can be exchanged carries out enhanced heat transfer.In the lower area of heat exchanger tube, the energy that liquid film is thinned is weakened Power weakens the enhanced heat transfer effect on fin 2, when so that the liquid refrigerants after condensation is flowed downward under the effect of gravity, can subtract The resistance that small liquid refrigerants flows in groove body 3, the ability that enhancing liquid refrigerants flows downward along groove body 3, makes liquid refrigerants It swimmingly flows out from groove body 3, is gathered to prevent liquid film on 2 surface of fin, so as to the comprehensive overall heat exchange effect for improving heat exchanger tube.

The heat exchanger tube of the utility model solves the problems, such as the discharge of liquid refrigerants in condensation process, reduces heat exchanger tube fin The attenuation that lower area setting protrusion brings overall heat exchange performance, the part for exchanging heat pipe carries out condensation reinforcing, and optimize Condensation drain effect, while taken into account heat exchanger tube liquid film is thinned in condensation process and strengthened and drain asking for liquid refrigerants in time Topic.For the heat exchanger tube of the utility model, thinking usual in the prior art is breached, is protruded above without focusing on raising fin Portion was set on the problem of quantity, when making annular knurl mold, can also ensure the intensity of gear hobbing, in order to avoid occur collapsing tooth phenomenon, it can Reduce difficulty of processing and processing cost.

In a preferred embodiment, as shown in Figure 1, the region that fin 2 is equipped with protrusion forms the in the circumferential One continuum, smooth fin section 6 form the second continuum.Such set-up mode is not increasing protrusion part density degree In the case of, protrusions more as possible can be set for the region of condensation in tube body 1, the thickness of liquid film is thinned, raising is changed Thermal energy power.For example, embodiment as shown in Figure 1, when heat exchanger tube installation within the condenser when, fin 2 is equipped with the of protrusion One continuum is located at the upper area of fin 2, and smooth 6 corresponding second continuum of fin section is located at the lower region of fin 2 Domain.

For embodiment shown in FIG. 1, it is preferable that the smooth corresponding angular range in 1 circumferential direction of tube body of fin section 6 is less than Equal to 180 °.Such set-up mode can increase fin 2 as possible and protrude above portion in the case where ensureing heat exchanger tube drainage capacity Quantity thickness of liquid film is thinned, improves exchange capability of heat.More preferably, smooth fin section 6 corresponding angle in 1 circumferential direction of tube body exists Entire circumferential upper proportion ranging from 1/7~1/2.

In another optional embodiment, include multigroup protrusion in the region equipped with protrusion on fin 2, it is multigroup Protrusion is in the circumferentially-spaced setting of fin 2, and correspondingly, smooth fin section 6 also forms spaced structure.For example, base It is in embodiment shown in FIG. 1, the protrusion of 2 upper area of fin is circumferentially disposed multigroup along fin 2, and between multigroup protrusion Every setting.Multigroup protrusion on such heat exchanger tube can also increase the surface area of tube body 1, while be thinned and condense in fin surface The thickness of upper liquid film reduces thermal resistance, improves the heat exchange property of condenser pipe.

Preferably, the first continuum and the second continuum are included in the circumferential direction of fin 2, wherein, the first continuum It is interior be equipped with multigroup protrusion, multigroup protrusion fin 2 circumferentially-spaced setting, the second continuum be smooth fin section 6. By taking structure shown in Fig. 1 as an example, the first continuum is the upper area of fin 2, circumferentially arranged with multigroup convex in upper area Go out portion, the second continuum is the lower area of fin 2, and lower area is smooth fin section 6.

In another optional embodiment, protrusion is had additional in the local location of smooth fin section 6.For example, it is based on Embodiment shown in FIG. 1 increases a small amount of protrusion in the smooth fin section 6 of 1 lower area of tube body, if to condensed water from Outflow does not form larger impact in groove body 3, within protection domain.Such heat exchanger tube still is able to reduce liquid flowing resistance, Liquid is made swimmingly to flow out, the circumferential heat exchange area of reduction is gathered in fin surface to prevent liquid film and increases thermal resistance, so as to which synthesis carries The overall heat exchange effect of high heat exchanger tube.

Preferably, the first continuum and the second continuum are included in the circumferential direction of fin 2, wherein, the first continuum For along the continuum for being circumferentially with protrusion of fin 2, the second continuum is smooth fin section 6, and in smooth fin section 6 Local location have additional protrusion.By taking structure shown in Fig. 1 as an example, upper area of first continuum for fin 2, upper zone Domain is the continuum that protrusion is circumferentially with along fin 2, and the second continuum is the lower area of fin 2, and lower area is Smooth fin section 6, a small amount of protrusion can be added in the local location of smooth fin section 6.

Other than the various embodiments described above, alternatively, the structure type of the first continuum and the second continuum can In any combination.In addition, the whole intermittent intervals setting in region and smooth fin section 6 of the fin 2 equipped with protrusion (such as be spaced Scheme uniformly) is also within the protection scope of the utility model.

As shown in Figure 1, such heat exchanger tube sets the regional peace of protrusion being processed between sliding fin section 6 on fin 2 When formed boundary structure, be used to implement the transition in two regions.Preferably, boundary structure is in class zigzag, helix, stepped Or step-like grade is within the protection scope of the utility model.

The structure for protruding above portion to fin 2 below is described.In order to more clearly illustrate the structure of protrusion And arrangement mode, heat exchanger tube shown in FIG. 1 is unfolded in circumferencial direction, Fig. 2 illustrates the partial structural diagram of fin 2, Fig. 3 is the side view of 2 structure of fin.

Preferably, the free end of protrusion has sharp portion, is conducive to stretch liquid film during downward liquid flow, Thickness of liquid film is thinned, strengthens the effect of partial condensation.Alternatively, protrusion may be designed in boss structure, protrusion Free end is rounding off structure.

In order to increase the quantity of protrusion, to improve the ability that liquid film is thinned, it is preferable that broken section as shown in Figure 4 Figure is equipped at least two layers of protrusion on the radial height direction of fin 2.Certainly, it is only set on the radial height direction of fin 2 One layer of protrusion is put also to be within the protection scope of the utility model.

With reference to shown in Fig. 1 to Fig. 3, at least two layers of protrusion stagger setting in the circumferential direction along tube body 1.For example, shown in Fig. 1 The fin 2 of heat exchanger tube is equipped with two layers of protrusion, and two layers of protrusion is alternately arranged at intervals in the circumferential direction of tube body 1, convex to make Go out portion to be uniformly distributed on the circumferential zones of heat exchanger tube, can making liquid film while thin liquid film is drawn, thin and thick is uniform everywhere, makes to change Thermal resistance is evenly distributed heat pipe everywhere, so as to improve the uniformity of heat exchanger tube heat exchange, and improves overall heat exchange ability.It is moreover, this Setting form also can be that hobboing cutter processes lower floor's protrusion slot milling, multilayer protrusion easy to process.Alternatively, at least two layers It is facing each other between protrusion to be also within the protection scope of the utility model.

Preferably, as shown in figure 4, at least two layers protrusion includes first layer protrusion 4 and second layer protrusion 5, second Layer protrusion 5 is located at 4 lower section of first layer protrusion.

Wherein, as shown in figure 3, the formation of first layer protrusion 4 is to be carried out using annular knurl mold at the top of original fin 2 Secondary extrusion is formed.Specifically, indent 7 is formed by annular knurl in the width direction at 2 top of fin, indent 7 can be relative to tube body 1 Axis be obliquely installed, simultaneously because metal has good plasticity in itself, the both ends of indent 7 are extended to 2 outside of fin and are formed First layer protrusion 4.Preferably, the side view of fin, the end face of 2 top indent 7 of fin after being circumferentially unfolded with reference to shown in figure 3 Shape is in being inverted class triangle, trapezoidal or rectangle etc., in the case that the end surface shape of indent 7 assumes that its top seal, by pressing Bottom, madial wall and the top surface of slot 7 are enclosed.In vertical view after fin circumferentially deploying shown in Fig. 5, indent 7 relative to The axis of tube body 1 is obliquely installed, and the both sides of fin 2 are serrated, and first layer protrusion 4 forms triangular structure.

Optionally, as shown in figure 5, angle β=15 ° between 2 top extending direction of 7 inclined direction of indent and fin~ 65°.As shown in figure 3, on individual pen fin 2 indent 7 quantity n2=35~100.

Optionally, as shown in Figure 4 and Figure 5, depth h1=0.1~0.45mm or indent 7 of the indent 7 apart from 2 top of fin Width h2=0.01~0.35mm or first layer protrusion 4 to 2 side of fin extension protrusion length h3=0.05~ 0.2mm。

As shown in figure 3, second layer protrusion 5 is located at the radially inner side of first layer protrusion 4, second layer protrusion 5 passes through Annular knurl is formed.Preferably, the compressive plane of second layer protrusion 5 is in inversion class triangle, trapezoidal or rectangle etc..Second layer protrusion 5 be to squeeze to be formed in 2 one of side of fin, does not increase weight additionally, while increase the surface area of fin 2.In liquid Refrigerant can further stretch liquid film during flowing downward, and thickness of liquid film is thinned, and strengthen partial condensation effect.

Preferably, each second layer protrusion 5 is respectively positioned on the same side of fin 2.As shown in figure 5, in the right side of fin 2 Equipped with second layer protrusion 5, second layer protrusion 5 is triangular in shape and with sharp portion.Second layer protrusion 5 can be reduced in this way The width occupied in groove body 3 between adjacent fins 2, to retain wider fluid flow paths, in the premise that liquid film is thinned Under the resistance that is subject to when reducing liquid flowing as possible.

Optionally, as shown in Figures 2 and 3, second layer protrusion 5 is relative to the outwardly extending width h4=of fin surface Step height h5=0.15~0.45mm that 0.05~0.2mm or 5 bottom of second layer protrusion are formed with 1 root of tube body or the Width h6=0.05~0.32mm of the two layers of protrusion 5 in 2 circumferential direction of fin.Second layer protrusion 5 is in 2 side shape of individual pen fin Into quantity n3=35~100.

Preferably, as shown in Figure 1, the first layer protrusion 4 in adjacent fins 2 is mutually staggered in the circumferential direction of tube body 1 and set It puts, correspondingly, the second layer protrusion 5 in adjacent fins 2 also mutually staggers setting in the circumferential direction of tube body 1.Such setting side Formula can make layout of the first layer protrusion 4 on heat exchanger tube evenly, improve the uniformity that liquid film is thinned, enhanced heat exchange effect Fruit.

For heat exchanger tube inside, with reference to figure 4, using pipe outside the matched circumferential with groove of extruding and inside mold, The high internal tooth of certain rib is squeezed out on the inner wall of tube body 1, the disturbance of heat exchanger tube internal flow can be increased, also increased simultaneously Heat exchange area.

Preferably, the inner wall of tube body 1 is equipped with spiral helicine raised thread 8.Heat exchanger tube is same processing outside fin 2 When, it is utilized in pipe with the rolling of slotted lining core in raised thread 9.

As shown in figure 4, the section of raised thread 8 is in that class is trapezoidal or inversion triangular structure, top form one with tube body 1 Body, two base angles are in rounding off, and the inner wall of raised root and tube body 1 is in rounding off.Exchange heat pipe inner wall is strengthened, no Pipe internal surface product is increased only, while certain protrusion is formed with inside pipe wall, increases the level of disruption of tube fluid, thus into One step enhances heat transfer effect.

Optionally, as shown in figure 4, inclination angle alpha 1=15~55 ° that raised thread 8 is formed relative to 1 axis of tube body, convex Protrusion height h9=0.15~0.55mm of the screw thread 8 on 1 inner wall of tube body is played, the folder that two sides are formed on 8 section of raised thread Angle γ=15~65 °.

Raised thread 8 in pipe can be evenly distributed or non-uniform Distribution.Heterogeneous distribution disturbs tube fluid Dynamic effect is more excellent, with enhanced heat exchange effect.For example, raised thread 8 is multiple thread, multiple thread is high in machining efficiency, and whole Spacing between a 1 inside adjacent protrusion screw thread 8 of tube body is consistent or not quite identical, can increase the disturbance effect to fluid Fruit.Optionally, multiple thread is distributed n1=10~80 in the whole circumference of 1 inner wall of tube body.

For above-mentioned each embodiment, fin 2 can be integrally disposed upon on tube body 1, and protrusion can also be integrally disposed upon fin 2 On.The mode of being wholely set can reduce thermal contact resistance, to improve the heat exchange efficiency of heat exchanger tube.Preferably, in fin 2 and protrusion It is at least one molding by extrusion, can not additionally increase the weight of heat exchanger tube.

In a specific embodiment, as shown in figures 1 to 6, heat exchanger tube is added on dedicated fin roller mill Work forms, strengthen using extrusion forming ELEMENTARY INTRODUCTION TO NON technique, outside the heat exchange tube using knife combination and annular knurl die assembly into Row is extruded from, and inside, which is strengthened, to be synchronized rolling when rolling fin on the outside using channel pressing die and form, bilateral strengthen can and meanwhile into Row.

For example, outer diameter 19.05mm can be used, wall thickness is that the main pipe of 1.13mm is processed.Pipe is outer to be added using assembling die Work goes out on the basis of main pipe in the fin 2 of certain spiral angle.As shown in Figure 1, tube body 1 may include unprocessed 12 He of smooth section Be machined with fin 2 into wing section 11, it is contemplated that the demand of installation and heat exchange can be respectively equipped with smooth section at the both ends into wing section 11 12, the installation of heat exchanger tube is used to implement, can be connected in smooth section 12 and between wing section 11 by changeover portion 13.Wherein, into wing Fin 2 is machined in section 11, groove body 3 is formed between adjacent turn fin 2,3 bottom of groove body is smooth, and 3 bottom of groove body and fin 2 Junction be in rounding off；Or 3 bottom of groove body, integrally in rounding off, such set-up mode is conducive to refrigerant and flows away.

Optionally, as shown in Figure 1, fin 2 and angle α=0.3 °~3.0 ° between the plane of 1 axis of tube body. Optionally, as shown in Fig. 2, thickness h 7=0.1~0.252mm of fin 2, the 3 width h8=of groove body that is formed between adjacent fins 2 0.252~0.558mm.

Then the fin 2 on tube body 1 in the circumferential zones of part is combined using special knurling tool and carries out annular knurl processing, Remaining circumferential zones is without annular knurl processing.Indent 7 is formed in the top annular knurl of fin 2, while indent 7 are formed, by In the good plasticity of metal material itself, in fin 2 both sides self-assembling formation, two first layer protrusions 4.Further, first 4 lower part of layer protrusion is also formed with being only located at the second layer protrusion 5 of 2 side of fin.In this way fin is increased in knurled portion Surface area, while increase wedge angle quantity, can be drawn during thin film drainage thin.

The heat exchanger tube of the utility model, can be on heat exchanger tube top by increasing by the quantity of 2 surface boss of fin or wedge angle The thickness of liquid film being adhered to during gaseous coolant condensation on heat exchange pipe surface fin is thinned in region, while also increases heat exchange surface It accumulates, and at utilization edge spike and the characteristics of boss corner curvature is larger, refrigerant liquid film of making thinner, so as to enhance heat transfer effect. And heat exchanger tube lower area is then the smooth fin section 6 handled without annular knurl, can play reduction liquid refrigerants and be flowed in groove body 3 Dynamic resistance, the ability that enhancing liquid refrigerants flows downward.Based on above design, heat exchanger tube can be improved and case tube heat exchanger is whole The overall heat exchange effect of machine.

Secondly, the utility model additionally provides a kind of heat exchanger.Preferably, which is condenser, and condenser can be with It is closed shell and tube condenser, heat exchanger tube is installed in condenser inner horizontal.After mounting, fin 2 carries protrusion to heat exchanger tube Region set upward, smooth fin section 6 is set downward.

During condenser working, hot fluid to be added can be passed through inside heat exchanger tube, is full of gaseous coolant outside heat exchanger tube.Heat exchanger tube In condensation process, it on the one hand can strengthen to be thinned when gaseous coolant condenses being adhered to heat exchange by the protrusion of upper fins 2 Thickness of liquid film on pipe surface fin, while also increase heat exchange surface area, using at edge spike and boss corner curvature compared with Greatly, it makes thinner refrigerant liquid film.On the other hand the ability for liquid film of making thinner can be weakened by the smooth fin section 6 in lower part, reduces or goes Fall the measure strengthened on fin, reduce flow resistance of the liquid refrigerants in groove body 3, the energy that enhancing liquid refrigerants flows downward Power.Heat exchanger tube in such condenser influences two critical aspects of heat exchange efficiency due to having taken into account simultaneously, it is thus possible to improve Overall heat exchange effect.

In addition, the utility model additionally provides a kind of air conditioner, including the heat exchanger described in above-described embodiment.Due to such Heat exchanger has higher heat exchange efficiency, thus can also improve the working performance of air conditioner.

A kind of heat exchanger tube provided by the utility model, heat exchanger and air conditioner are described in detail above.Herein In apply specific embodiment the principle and embodiment of the utility model be expounded, the explanation of above example is only It is the method and its core concept for being used to help understand the utility model.It should be pointed out that the ordinary skill for the art For personnel, under the premise of the utility model principle is not departed from, can also to the utility model, some improvement and modification can also be carried out, These improvement and modification are also fallen into the protection domain of the utility model claims.

Claims (35)

1. a kind of heat exchanger tube, which is characterized in that including tube body (1), circumferentially arranged with fin (2) on the outer wall of the tube body (1), Protrusion is equipped on the partially circumferentially region of the fin (2), the rest part circumferential zones of the fin (2) are formed smoothly Fin section (6).

2. heat exchanger tube according to claim 1, which is characterized in that the fin (2) is on the outer wall of the tube body (1) Helix is distributed.

3. heat exchanger tube according to claim 1, which is characterized in that the fin (2) is equipped with the region of protrusion in week The first continuum is upwardly formed, the smooth fin section (6) forms the second continuum in the circumferential.

4. heat exchanger tube according to claim 3, which is characterized in that the smooth fin section (6) is circumferential in the tube body (1) Upper corresponding angular range is less than or equal to 180 °.

5. heat exchanger tube according to claim 1, which is characterized in that on the fin (2) in the region equipped with protrusion Including multigroup protrusion, the multigroup protrusion being provided at circumferentially spaced along the fin (2).

6. heat exchanger tube according to claim 1, which is characterized in that include the first continuum in the circumferential direction of the fin (2) Domain and the second continuum, are equipped with multigroup protrusion in first continuum, and multigroup protrusion is along the wing Piece (2) are provided at circumferentially spaced, and second continuum is the smooth fin section (6).

7. heat exchanger tube according to claim 1, which is characterized in that the local location of the smooth fin section (6) is equipped with institute State protrusion.

8. heat exchanger tube according to claim 1, which is characterized in that include the first continuum in the circumferential direction of the fin (2) Domain and the second continuum, first continuum are along the continuum for being circumferentially with protrusion of the fin (2), institute The second continuum is stated as the smooth fin section (6), the local location of the smooth fin section (6) is equipped with the protrusion.

9. according to the heat exchanger tube described in claim 3,6 or 8, which is characterized in that the shape that the heat exchanger tube is installed within the condenser Under state, first continuum is set upward, and second continuum is set downward.

10. heat exchanger tube according to claim 1, which is characterized in that the free end of the protrusion has sharp portion.

11. heat exchanger tube according to claim 1, which is characterized in that be equipped on the radial height direction of the fin (2) At least two layers protrusion.

12. heat exchanger tube according to claim 11, which is characterized in that at least two layers protrusion is along the tube body (1) stagger setting in circumferential direction.

13. heat exchanger tube according to claim 11, which is characterized in that at least two layers protrusion is protruded including first layer Portion (4) and second layer protrusion (5), fin (2) top form indent (7), while the two of the indent (7) by annular knurl It holds to extending on the outside of the fin (2) and forms the first layer protrusion (4), the second layer protrusion (5) is positioned at described the The radially inner side of one layer of protrusion (4), the second layer protrusion (5) are formed by annular knurl.

14. heat exchanger tube according to claim 13, which is characterized in that each second layer protrusion (5) is respectively positioned on institute State the same side of fin (2).

15. heat exchanger tube according to claim 13, which is characterized in that the indent (7) relative to the tube body (1) axis Line is obliquely installed.

16. heat exchanger tube according to claim 13, which is characterized in that the first layer on the adjacent fin (2) is convex Go out portion (4) and setting is mutually staggered in the circumferential direction of the tube body (1).

17. heat exchanger tube according to claim 13, which is characterized in that end of the indent (7) along length direction In class triangle, trapezoidal or rectangle；And/or the compressive plane of the second layer protrusion (5) is in class triangle, trapezoidal or rectangle.

18. heat exchanger tube according to claim 1, which is characterized in that the inner wall of the tube body (1) is equipped with spiral helicine convex Play screw thread (8).

19. heat exchanger tube according to claim 18, which is characterized in that the raised thread (8) is multiple thread.

20. heat exchanger tube according to claim 18, which is characterized in that the cross section of the raised thread (8) is trapezoidal in class Or triangular structure.

21. heat exchanger tube according to claim 1, which is characterized in that the fin (2) is integrally disposed upon the tube body (1) On and/or the protrusion be integrally disposed upon on the fin (2).

22. heat exchanger tube according to claim 21, which is characterized in that in the fin (2) and the protrusion at least One molding by extrusion.

23. heat exchanger tube according to claim 4, which is characterized in that the smooth fin section (6) is in the tube body (1) week Upward corresponding angle proportion ranging from 1/7~1/2 throughout the circumferential.

24. heat exchanger tube according to claim 1, which is characterized in that groove body (3), institute are formed between the adjacent fin (2) State that groove body (3) bottom is smooth, and groove body (3) bottom and the junction of the fin (2) are in rounding off；Or the groove body (3) bottom is in integrally rounding off.

25. heat exchanger tube according to claim 2, which is characterized in that the fin (2) with perpendicular to the tube body (1) axis Angle α=0.3 °~3.0 ° between the plane of line.

26. heat exchanger tube according to claim 1, which is characterized in that the thickness h 7=0.1 of the fin (2)~ 0.252mm forms width h8=0.252~0.558mm of groove body (3) between the adjacent fin (2).

27. heat exchanger tube according to claim 13, which is characterized in that the indent (7) is at the top of the fin (2) Width h2=0.01~0.35mm or described first layers protrusion (4) of depth h1=0.1~0.45mm or described indents (7) To length h3=0.05~0.2mm of fin (2) side extension protrusion.

28. heat exchanger tube according to claim 15, which is characterized in that indent (7) inclined direction and the fin (2) Angle β=15 °~65 ° between the extending direction of top.

29. heat exchanger tube according to claim 13, which is characterized in that the second layer protrusion (5) is relative to the wing Outwardly extending width h4=0.05~0.2mm or described second layers protrusion (5) bottom in piece (2) surface and the tube body (1) Step height h5=0.15~0.45mm or described second layers protrusion (5) that root is formed is in the fin (2) circumferential direction Width h6=0.05~0.32mm.

30. heat exchanger tube according to claim 13, which is characterized in that the pressure set on fin described in individual pen (2) Quantity n2=35~100 of slot (7)；Or the second layer protrusion (5) formed in fin described in individual pen (2) side Quantity n3=35~100.

31. heat exchanger tube according to claim 18, which is characterized in that the raised thread (8) is relative to the tube body (1) Protrusion height h9 of inclination angle alpha 1=15~55 ° or the raised thread (8) of axis on the tube body (1) inner wall Angle γ=15~65 ° that the section Shang Liangge sides of=0.15~0.55mm or the raised thread (8) are formed；Or The raised thread (8) is multiple thread, and multiple thread is distributed n1=10~80 in the whole circumference of the tube body (1) inner wall It is a.

32. a kind of heat exchanger, which is characterized in that including any heat exchanger tube of claims 1 to 31.

33. heat exchanger according to claim 32, which is characterized in that the heat exchanger is condenser.

34. heat exchanger according to claim 33, which is characterized in that the region that the fin (2) is equipped with protrusion exists It is continuum in circumferential direction, after mounting, the region of the fin (2) with protrusion is set the heat exchanger tube upward, described Smooth fin section (6) is set downward.

35. a kind of air conditioner, which is characterized in that including any heat exchanger of claim 32~34.